US3343210A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for the manufacture of plastic containers
Assignee: Dart Industries Inc
•
Filing: 1963-10-15
•
Granted: 1967-09-26
•
Expires: 1983-10-15
Abstract
No abstract record available.
Inventors
- 👤 Guignard Boris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:08
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/03; B29C48/09; B29C48/25; B29C48/30; B29C48/32; B29C48/325; B29C2949/00; B29C2949/30; B29C2949/3032; B29C2949/3041; B29L; B29L2031/00; B29L2031/712; B29L2031/7158
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
A DEVICE FOR EXTRUDING A PLASTIC PARISON HAVING WALL THICKNESS WHICH VARY ALONG ITS LENGTH COMPRISING: (A) AN EXTRUSION HEAD HAVING SURFACES DEFINING AN EXTRUSION PASSAGE; (B) A MANDREL HAVING SURFACES COMPLIMENTARY TO SAID PASSAGE SURFACES POSITIONED IN AND ADAPTED FOR DISPLACEMENT WITH RESPECT TO SAID PASSAGE; (C) MEANS ADAPTED FOR AXIAL RECIPROCATING ACTION WITH RESPECT TO SAID EXTRUSION HEAD AND TO ENGAGE THE END OF THE PLASTIC PARISON EXTRUDED FROM SAID HEAD TO DRAW IT AWAY FROM THE HEAD IN TIMED RELATION WITH THE EXTRUSION OF PLASTIC; AND,
Claim 2
Independent Claim
89 words
A DEVICE FOR EXTRUDING A PLASTIC PARISON HAVING WALL THICKNESS WHICH VARY ALONG ITS LENGTH COMPRISING: (A) AN EXTRUSION HEAD HAVING SURFACES DEFINING AN EXTRUSION PASSAGE; (B) A MANDREL HAVING SURFACES COMPLIMENTARY TO SAID PASSAGE SURFACES POSITIONED IN AND ADAPTED FOR DISPLACEMENT WITH RESPECT TO SAID PASSAGE; (C) MEANS ADAPTED FOR AXIAL RECIPROCATING ACTION WITH RESPECT TO SAID EXTRUSION HEAD AND TO ENGAGE THE END OF THE PLASTIC PARISON EXTRUDED FROM SAID HEAD TO DRAW IT AWAY FROM THE HEAD IN TIMED RELATION WITH THE EXTRUSION OF PLASTIC; AND,
References Cited (Backward Citations)
US2953817A
Cited
US3019480A
Cited
US3029471A
Cited
US3196592A
Cited
US3186032A
Cited
GB918946A
Cited
US3172152A
Cited
US3229007A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-25 | 1971-03-27 | 1971-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-25 | 1975-03-27 | 1975-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-25 | 1979-03-27 | 1979-09-26 | $7700.00 | Window Closed / Lapsed |